Which landforms are present in the andean countries mountain peaks plateaus pampas

There are five countries in the Andean Region, these are: Bolivia, Colombia, Ecuador, Peru and Venezuela

The landforms present in the Andean countries are Mountain. The mountains here are mostly fold mountains.

Andean Mountains are the longest mountain range in the world and it stretches along many countries in South America like Bolivia, Colombia, Ecuador, Peru and Venezuela.

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i think its both a and b

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong